ChemistryHow much heat energy is required to raise the temperature of 4.50 liters of water from 36 degrees celcius to 44.6 degrees celcius?
January 15, 2012

3rd grade mathwater makes up 7/10 of your body. Is more than 1/2 of your body water? write a number sentence to compare 7/10 and 1/2. Explain
January 14, 2012

Health ScienceHi, I'm writing my assignment on people's lifestyles and cant come up with many ideas... this is the question: Why health professionals have to take into account factors that influence people's lifestyle choices?
January 13, 2012

algebrafind the vertex, line of symmetry,and the maximum or minimum value of f(x). Choose the graph that represents f(x)=1/4(x+9)^2+7
November 28, 2011

Pre-AlgebraQuestion is: What is the algebraic equation to determine when they will meet? For the following information, I understand 5(x+y) = 3000 for 1st plane & 10(x-y) = 3000 for 2nd plane. When an airplane flies with a given wind, it can travel 3000 km in 5hrs. When the same airplane...
November 13, 2011

Pre-AlgebraQuestion is: What is the algebraic equation to determine when they will meet? For the following information, I understand 5(x+y) = 3000 for 1st plane & 10(x-y) = 3000 for 2nd plane. When an airplane flies with a given wind, it can travel 3000 km in 5hrs. When the same airplane...
November 13, 2011

mathWeb Results For:The ratio of john's money to Peter's money was 4:7 at first. After john spent 1/2 of his money and Peter spent $60. Peter had twice as much money as john. How much money did john have at first?
November 10, 2011

ChemistryOk, thank you. That was the only way I could think of doing it too. What would the bond angles therefore be?
November 10, 2011

ChemistryHi, I have to draw a dot and cross diagram for NH2+ and then state the bond angles. I have done NH2-, but I am not sure how to do the + one.
November 10, 2011

IntroductiontoPsychologyAccording to Howard Gardner independent intelligence: (a) originates at a single site in the brain (b) comes for a differentsystemin the brain (c) originates inthe limbic system (d) has connections with the hippocampus I have the answer as B
November 5, 2011

Introductin to PsychologyAlyssa's family had moved in the middle of her junior year in high school. At her old school she was a varsity cheer leader, vice president of the student council, and would ave been presented as the school "sweetheart" at homecoming had her family not moved. Now...
November 5, 2011

Introduction to PsychologyNew technology is a wonderul servant, but the learning curve is often steep. Men often viewthemselves are more capable of using new technology that women because: (a) women learnnew skills more slowly (b) men generally have a higher estimation of their abilities than women do ...
November 5, 2011

Introduction to PsychologyAfter the day of the wreck, Yung avoided the corner of 9th and Mulberry. He knew that there was nothing wrong with thatparticular location, but since the acident he experienced shortness of breath and tightness in his muscles when he drove past the corner. Classical ...
November 5, 2011

Introduction to PsychologyJoaquin has been assigned a primary research project in his psychology class. He is to observe student behavior during a learning task andattempt to for a(an) ________. In order to do this, he must be able to describe principlesand events, and how they may be related. Would it...
November 5, 2011

Business EnglishPositive roles and actions of individuals that help the group build loyalty, resolve conflicts, and function smoothly include: (a) demonstrating openness and acceptance. (b) taking every opportunityto be the first to speak and insisting on personally responding to everyone ...
November 4, 2011

Business EnglishA store is designing a new catalog for its fall collection. Which of the following is LEAST likely to increase the store's credibility? (a) Creating a glossy photo layout with a varety of pictures (b) Stating the facts about each product (c) Promising consumers that these ...
November 4, 2011

Business EnglishIn which of thefollowing sentences is therefusal iplied rather than directlystated? (a) "We are not hiring anyone at the moment, but thank you for your interest. (b) "You cannot work in the production area because you are under 18 years old." (c) Employees who ...
November 4, 2011

Business EnglishWhich of the following would be the BEST strategy to follow in the opening paragraph of a letter to clients announcing expanded hours. (a) Explain that the results of a recent survey indicatethat a lot of people are unhappy with the current hours. (b) State what the new hours ...
November 4, 2011

Business English"I was sorry to hear about your mother's death." Indicate the alternative that both correctly evaluates the sentence and correctly explains the reason for the evaluation. Would it be: (a) Lacks you-attitude because it begins with the word"I" (b) Lacks ...
November 4, 2011

Business EnglishTrevor Collins works in the collections department, and he is very successful at writing professional, effective letters to customers whose accounts are overdue. The human resources department asks to use copies of some of his letters in a training course for new employees to ...
November 4, 2011

Business EnglishWhich of the following, if any, is the BEST replacement for "seems to be of importance"? I have the answer as (B) "Seems Important" Is this the correct answer?
November 4, 2011

ChemistryThis question seems too simple to me but i was just wondering if someone could help me with it? 8 a) Explain why the first ionisation energy values for the Group 1 elements become less positive as you go down the group? I have done this part it's b which is what I would ...
November 3, 2011

PSYCHOLOGYHe is never going to change. He is set in his ways," the cliet complained. "Let's think about it. Does this hurt you or him?" the therapist is applying: I put the answer as (a) a cognitive treatment approach. Is this correct?
October 30, 2011

PsychologyKevin hates his job, his girl friend dropped him, and he had a headache this morning from staying up too late eating hamburgers and drinking beer by himself. He has decided to initiate a new attack today and take control of his life.He will fin a new job, forget the girlfriend...
October 29, 2011

PsychologyIt may be difficult to sooth a crying baby who needs to befed and changed with cuddling and toys. The strengthof the physical needs in this situation support: Would the answer be B- the incentive approach to motivation
October 28, 2011

physicsA quarterback throws the football to a stationary receiver who is 16 m down the ﬁeld.The football is thrown at an initial angle of38.5◦to the ground.The acceleration of gravity is 9.81 m/s2.a) At what initial speed must the quarterback throw the ball for it to ...
October 24, 2011

statisticsat a certain college, there were 700 science majors,100 engineering majors and 500 business majors. if one student was selected at random, the probability that they are an engineering major is?
September 27, 2011

statisticsWill the sampling distribution of means be approximately normal if n=25 or so, even if the frequency distribution of X values is not normal?
September 25, 2011

mathJill ley took out a loan to pay for education for $60,000. would be repay back in 8 years with the interest of 6% what will be jill pay back at the end of the loan is:
September 22, 2011

accoutingHorton Company, as lessee, enters into a lease agreement on July 1, 2008, for equipment. The following data are relevant to the lease agreement: 1. The term of the non-cancelable lease is 4 years, with no renewal option. Payments of 422,689 are due on June 30, of each year. 2...
August 1, 2011

Organic ChemI had posted this question yesterday morning at 4:58am. Any possibility someone can help? I just completed a lab called "Acid-Catalyzed Dehydration of an Alcohol: Synthesis of 2-Octenes." I started with 2-octanol and the lab instructions said the product had the ...
July 15, 2011

Organic ChemYou have a bottle of cyclohexane and a bottle of cyclohexene, but they are unlabelled. Which of the following reagents would be the best choice to use to distinguish which was which? a. KOH/H2O b. KOH/CH3OH c. CH3ONa/CH3OH d. CH3CH2ONa/CH3CH2OH e. (CH3)3COK/(CH3)3COH My ...
July 15, 2011

chemWhich of the following species is isoelectronic, Ba2+ and Ba, Al3+ and Ar, Cl - and Na+ , or Sr2+ and Se2-
July 12, 2011

StatsCan you tell me what ∑xy means? Like is in the sum of all x times y or what?
July 10, 2011

Economics2. Lucy quits a $50,000 job to open her waffle business. She makes $225,000 in revenue from her first year of waffle sales. She pulls $50,000 out of an account that returns 3% interest per year and invests the entire amount in her business. She also borrows $50,000 at 10% ...
July 9, 2011

EconomicsThe lost interest from the savings she used to start her business. -- is this an implicit or explicit cost? Is this a fixed or variable cost?
July 9, 2011

chemistrya 30.0 ml solution of potassium nitrate was diluted to 125 ml and 25 ml of this solution were then diluted to 150 ml. the concentration of the final solution is 0.00307 M. Calculate the concentration of the original solution.
July 7, 2011

chemWhat pressure (atm) is exerted by a column of ethanol 86.0 cm high. The density of ethanol is 0.789 g/cm3 and 9.8 m/s2 as your gravitational constant.
July 6, 2011

geometrydetermine the length of the sides and the measures of the angels for the congruent quadrilaterals ABCD and A'B'C'D' there are 2 diagrams but don't know how to show it to you
June 28, 2011

Physics1. A 0.200kg ball moves with a velocity of 0.3m/s. It collides with a second ball that is at rest and has a mass of 0.1kg. After the collision, the velocity of 0.1kg ball is 0.26m/s. What is the new velocity of the first ball. Please indicate which equation you use, what ...
June 26, 2011

SCI/275 (Risk Assessment)I don't know this math, but the instruction of the assignment says that we are to make a "projection chart" based on the information of record. How do I multiply/divide, etc., in order to find the "future" numbers?
June 19, 2011

SCI/275 (Risk Assessment)There is a direction in this assignment where the projection of WNV in Genericville is 50 cases. It also mentions that in 2006, there were 4,269 cases, of WNV including 177 fatalities. It follows with the proposal that the Malathion would reduce the mosquito population by 90% ...
June 19, 2011

Financial Accounting, how much manufacturing overhead was allocated to production? Archangel Manufacturing has just finished the year 2012. They created a predetermined manufacturing overhead allocation rate at the beginning of the year based on a percentage of direct labor costs. Below are ...
June 15, 2011

MathIn a geometric series, t1=12 and S3=372. What is the greatest possible value for t5? Justify your answer.
May 30, 2011

whole numberWhen stacking bags of dog food, the heaviest items should be placed at the bottom. Starting at the bottom, in what order should bags of dog food weighing 25 pounds, 20 pounds, 30 pounds, and 28 pounds be stacked?
May 30, 2011

computer sciencein visual logic You will need to design an application that it will prompt a user for their hourly pay rate, their hours worked, and whether they are single, married, divorced, or widowed. It will then calculate their gross and net pay. If they work more than 40 hours, ...
May 22, 2011

computer scienceYour goal is to solve the following programming lab activity. Write a program that prompts & accepts a number between 1 and 12. After getting the input, display the number with the appropriate month. (example: This is the 1st month January, This is the 2nd month ...
May 22, 2011

childhood educationwhat does reseach show about the child;s relationship with the primary parental figure when the child has additional attachments to other people
May 13, 2011

mathIn solving the equation (x + 4)(x  7) = -18, Eric stated that the solution would be x + 4 = -18 => x = -22 or (x  7) = -18 => x = -11 However, at least one of these solutions fails to work when substituted back into the original equation. Why is that? Please ...
May 4, 2011

mathIf a stone is tossed from the top of a 250 meter building, the height of the stone as a function of time is given by h(t) = -9.8t2  10t + 250, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to the nearest ...
May 3, 2011

mathNavigation. The current in a typical Mississippi River shipping route flows at a rate of 4 mph. In order for a barge to travel 24 mi upriver and then return in a total of 5 hr, approximately how fast must the barge be able to travel in still water?Solve by factoring: 9t2 + 3t= 0
May 3, 2011

mathSolve using the elimination method. Show your work. If the system has no solution or an infinite number of solutions, state this.2x + 2y = 202x  2y = 4
May 2, 2011

math Joe has a collection of nickels and dimes that is worth $8.55. If the number of dimes was tripled and the number of nickels was decreased by 2, the value of the coins would be $23.45. How many nickels and dimes does he have?
May 2, 2011

math use the substitution method. Show your work. If the system has no solution or an infinite number of solutions, state this 3x + 24y = 24s,27x  15y = -15 .
May 2, 2011

math. Use the discriminant to determine whether the following equations have solutions that are: two different rational solutions; two different irrational solutions; exactly one rational solution; or two different imaginary solutions. 8x2 + 2x + 4 = 0 Two different irrational ...
May 2, 2011

mathUse the discriminant to determine whether the following equations have solutions that are: two different rational solutions; two different irrational solutions; exactly one rational solution; or two different imaginary solutions.8x2 + 2x + 4 = 0
May 2, 2011

math If a stone is tossed from the top of a 250 meter building, the height of the stone as a function of time is given by h(t) = -9.8t2  10t + 250, where t is in seconds, and height is in meters. After how many seconds will the stone hit the ground? Round to the nearest ...
May 2, 2011

algebraA 10-ft diagonal brace on a bridge connects a support of the center of the bridge to a side support on the bridge. The horizontal distance that it spans is 2 ft longer that the height that it reaches on the side of the bridge. Find the horizontal and vertical distances spanned...
May 1, 2011